Class PioneerUtils

java.lang.Object

org.junitpioneer.internal.PioneerUtils

public class PioneerUtils
extends Object

Pioneer-internal utility class. DO NOT USE THIS CLASS - IT MAY CHANGE SIGNIFICANTLY IN ANY MINOR UPDATE.

See Also:

• PioneerAnnotationUtils

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PioneerUtils()

Method Summary

Modifier and Type	Method	Description
private static <T> void	addButThrowIfDuplicate(Set<T> set, T element)
static List<List<?>>	cartesianProduct(List<List<?>> lists)
static Locale	createLocale(String language)
static Locale	createLocale(String language, String country)
static Locale	createLocale(String language, String country, String variant)
static <T> Collector<T,Set<T>,Set<T>>	distinctToSet()	A toSet collector that throws an IllegalStateException on duplicate elements (according to equals).
static List<org.junit.jupiter.api.extension.ExtensionContext>	findAllContexts(org.junit.jupiter.api.extension.ExtensionContext context)	Find all (parent) ExtensionContexts via ExtensionContext.getParent().
static Optional<Method>	findMethodCurrentOrEnclosing(Class<?> clazz, String methodName, Class<?>... parameterTypes)	Find the first Method of the supplied class or interface that meets the specified criteria, beginning with the specified class or interface and traversing its enclosing classes until such a method is found or the top level class is reached.
static String	nullSafeToString(Object object)
static <T> Class<T>	wrap(Class<T> clazz)	Replaces all primitive types with the appropriate wrapper types.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PioneerUtils

private PioneerUtils()

Method Details

distinctToSet

public static <T> Collector<T,Set<T>,Set<T>> distinctToSet()

A toSet collector that throws an IllegalStateException on duplicate elements (according to equals).

addButThrowIfDuplicate

private static <T> void addButThrowIfDuplicate(Set<T> set,
 T element)

findMethodCurrentOrEnclosing

public static Optional<Method> findMethodCurrentOrEnclosing(Class<?> clazz,
 String methodName,
 Class<?>... parameterTypes)

Find the first Method of the supplied class or interface that meets the specified criteria, beginning with the specified class or interface and traversing its enclosing classes until such a method is found or the top level class is reached.

The algorithm does not search for methods in Object.

Parameters:

clazz - the class or interface in which to find the method; never null

methodName - the name of the method to find; never null or empty

parameterTypes - the types of parameters accepted by the method, if any; never null

Returns:

an Optional containing the method found; never null but potentially empty if no such method could be found

See Also:

• ReflectionSupport.findMethod(Class, String, Class...)

findAllContexts

public static List<org.junit.jupiter.api.extension.ExtensionContext> findAllContexts(org.junit.jupiter.api.extension.ExtensionContext context)

Find all (parent) ExtensionContexts via ExtensionContext.getParent().

Parameters:

context - the context for which to find all (parent) contexts; never null

Returns:

a list of all contexts, "outwards" in the getParent-order, beginning with the given context; never null or empty

nullSafeToString

public static String nullSafeToString(Object object)

wrap

public static <T> Class<T> wrap(Class<T> clazz)

Replaces all primitive types with the appropriate wrapper types. Returns the passed argument if it's not a primitive according to Class.isPrimitive().

Returns:

the wrapped class of the primitive type, or the passed class

See Also:

• MethodType.wrap()

cartesianProduct

public static List<List<?>> cartesianProduct(List<List<?>> lists)

createLocale

public static Locale createLocale(String language,
 String country,
 String variant)

createLocale

public static Locale createLocale(String language,
 String country)

createLocale

public static Locale createLocale(String language)